NYC-WTC_000211330

NYC 9/11 Public Portal Document

TEM Asbestos (air1 Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 8243 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N orV EDS (Nonadb No F B C M >=5p 7 Chrys Amphibole Nonasb AmbigjND No Coord <5m Elements)

I

j Struct = > O.Sg > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% cov^e ate least 20 unfolded or overlapped grid Guares <5% F B C M >5u EOS spectrum conforming to laboratory holes or opague areas identification criteria observed Chrysotile : AMPHIBOLES , Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_0 02863953

NYC-WTC_000211330